GB1544774A - Radio identification systems - Google Patents

Radio identification systems

Info

Publication number
GB1544774A
GB1544774A GB2751/77A GB275177A GB1544774A GB 1544774 A GB1544774 A GB 1544774A GB 2751/77 A GB2751/77 A GB 2751/77A GB 275177 A GB275177 A GB 275177A GB 1544774 A GB1544774 A GB 1544774A
Authority
GB
United Kingdom
Prior art keywords
identification systems
radio identification
radio
systems
identification
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2751/77A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Secretary of State for Defence Canada
UK Secretary of State for Defence
Original Assignee
Secretary of State for Defence Canada
UK Secretary of State for Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Secretary of State for Defence Canada, UK Secretary of State for Defence filed Critical Secretary of State for Defence Canada
Priority to GB2751/77A priority Critical patent/GB1544774A/en
Priority to US05/871,002 priority patent/US4180815A/en
Publication of GB1544774A publication Critical patent/GB1544774A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
    • G01S13/781—Secondary Surveillance Radar [SSR] in general

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
GB2751/77A 1977-01-24 1977-01-24 Radio identification systems Expired GB1544774A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2751/77A GB1544774A (en) 1977-01-24 1977-01-24 Radio identification systems
US05/871,002 US4180815A (en) 1977-01-24 1978-01-20 Radio identification systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2751/77A GB1544774A (en) 1977-01-24 1977-01-24 Radio identification systems

Publications (1)

Publication Number Publication Date
GB1544774A true GB1544774A (en) 1979-04-25

Family

ID=9745212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2751/77A Expired GB1544774A (en) 1977-01-24 1977-01-24 Radio identification systems

Country Status (2)

Country Link
US (1) US4180815A (en)
GB (1) GB1544774A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238210A (en) * 1989-11-14 1991-05-22 Racal Mesl Ltd Transponder with code identification circuit having a surface acoustic wave device filter

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7804440A (en) * 1978-04-26 1979-10-30 Hollandse Signaalapparaten Bv CODE DETECTOR FOR AN INTERROGATOR-TRANSPONDER SYSTEM.
US4937581A (en) * 1980-02-13 1990-06-26 Eid Electronic Identification Systems Ltd. Electronic identification system
US4734698A (en) * 1985-10-31 1988-03-29 X-Cyte, Inc. Passive interrogator label system having offset compensation and temperature compensation for a surface acoustic wave transponder
JP2561930B2 (en) * 1987-09-22 1996-12-11 三菱電機株式会社 Radar transponder
AU3031289A (en) * 1988-01-11 1989-08-01 Russell C. Harbaugh File location system
US4899157A (en) * 1989-04-03 1990-02-06 Allied-Signal Inc. Leading edge detector/reply quantizer
US5081457A (en) * 1989-11-30 1992-01-14 Honeywell Inc. Apparatus for reducing synchronous fruit in tcas surveillance systems
US5322598A (en) * 1990-02-06 1994-06-21 Olin Corporation Chlorine dioxide generation using inert load of sodium perchlorate
US5198080A (en) * 1990-06-08 1993-03-30 Tenneco Canada Inc. Electrochemical processing of aqueous solutions
US5122240A (en) * 1990-06-08 1992-06-16 Tenneco Canada Inc. Electrochemical processing of aqueous solutions
CA2023733C (en) * 1990-08-21 1998-04-14 Marek Lipsztajn Chlorine dioxide generation from chloric acid
US5284553A (en) * 1990-08-22 1994-02-08 Sterling Canada, Inc. Chlorine dioxide generation from chloric acid
US5264854A (en) * 1992-03-12 1993-11-23 Spiess Newton E Multiple vehicle identification and classification system
US5508705A (en) * 1994-01-10 1996-04-16 Spiess; Newton E. Vehicle identification classification and communication system
US6107910A (en) * 1996-11-29 2000-08-22 X-Cyte, Inc. Dual mode transmitter/receiver and decoder for RF transponder tags
US5986382A (en) * 1997-08-18 1999-11-16 X-Cyte, Inc. Surface acoustic wave transponder configuration
US6114971A (en) * 1997-08-18 2000-09-05 X-Cyte, Inc. Frequency hopping spread spectrum passive acoustic wave identification device
US6060815A (en) * 1997-08-18 2000-05-09 X-Cyte, Inc. Frequency mixing passive transponder
US6208062B1 (en) 1997-08-18 2001-03-27 X-Cyte, Inc. Surface acoustic wave transponder configuration
US6535109B1 (en) * 1998-12-01 2003-03-18 Texas Instruments Sensors And Controls, Inc. System and method for communicating with multiple transponders
DE102006057602B3 (en) * 2006-11-27 2008-04-10 Atmel Germany Gmbh Wireless data transmission method for use in radio frequency identification system, involves assigning time durations to symbol values and selecting data transmission protocol type by describing configuration register in passive transponder
FR2939997B1 (en) * 2008-12-16 2010-12-31 Thales Sa SECURE DATA TRANSMISSION METHOD

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2005460B2 (en) * 1970-02-06 1972-02-24 Siemens AG, 1000 Berlin u. 8000 München SECONDARY RADAR ANSWER DEVICE WITH MEANS TO SEPARATE OVERLAPPING INQUIRY SIGNALS
FR2152419B1 (en) * 1971-09-14 1974-05-31 Materiel Telephonique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238210A (en) * 1989-11-14 1991-05-22 Racal Mesl Ltd Transponder with code identification circuit having a surface acoustic wave device filter
GB2238210B (en) * 1989-11-14 1994-03-16 Racal Mesl Ltd Electronic identification tag

Also Published As

Publication number Publication date
US4180815A (en) 1979-12-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee